Survival Rates and Quality of Life According to Follow-up Period After Gastrectomy for Gastric Cancer (STOFOLUP)

This study compares different follow-up schedules after surgery for stage II or III stomach cancer to determine whether less frequent check-up visits have the same outcomes as more intensive monitoring — with the goal of reducing patient burden without compromising safety. **You may be eligible if...** - You are 19 years or older - You have been diagnosed with stage II or III stomach adenocarcinoma (confirmed by tissue testing) - You can understand the study and make an informed decision to participate **You may NOT be eligible if...** - You are pregnant, have an intellectual disability, or are otherwise considered a vulnerable patient - You cannot undergo CT scans due to kidney problems or severe contrast allergy - You are already enrolled in another clinical trial - Your stomach cancer was stage I or stage IV Talk to your doctor to see if this trial is right for you.